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UL Px Terminal Devices, Wrists, Elbows

Terms in this set (28)

Body Power & External Power
Voluntary Opening & Voluntary closing
What are the ACTIVE type of terminal devices? (4)
Aesthetic Restorations
Oppositions Posts
Sports/Recreational adaptations
What are the PASSIVE type of terminal devices? (3)
Ease of operation
What is the main benefit of active, body power, voluntary opening devices?
Powerful grip
Graded Prehension
Larger work envelope
What is the main benefits of active, body power, voluntary closing devices? (3)
Restoration of body image
What is the main benefits of active or passive hands?
3 pounds (3 rubber bands)
How many pounds of force is required for "most" ADLs?
5 = Adult(canted)
X = Nitrile Lined Fingers
A = Aluminum, or S = Steel
Code this terminal device:
P = Plastisol Coating
What does the P stand for for in the TD #10P?
#7 also known as the "work hook"
Only available in SS
Slightly longer than the #5
(comes in standard and large opening)
What model TD is this?
555 (Lyre)
What model TD is this?
Visibility during picking up and grasp
(Model 5X)
What is the benefit of this shape tines?
More precise grasp with smaller objects
Better for grasping cylindrical objects
Wider opening than the 5
Open in one plane (tines open symmetrically)
What is the benefit of this shape tines?
Sierra 2-load (voluntary opening hook)
2 pinch force options
hollow & replaceable tines

Disadvantages: Weight and size
What TD is this?
What are its special qualities?
APRL (voluntary closing)
Thumb is on the ulnar side
Automatic lock: manual unlock
"freewheeling" mode
2 opening options (large and small)
Disadvantages: Heavy and delicate
What TD is this?
What are its special qualities?
GRIP (voluntary closing)
Diverse in function (similar to the #7 work hook)
What TD is this?
What are its special qualities?
Constant Friction Wrist

Advantages: low profile, maintain constant friction in any TD position
Disadvantages: Not for heavy duty loads (body weight), higher likely hood of needing more repairs due to higher number of components
What wrist is this?
What are the advantages/disadvantages?
Advantages: Low cost, light weight, simple (minimal components), relatively durable
Disadvantages: Friction is NOT constant and will change with rotation of the terminal device
What are the advantages and disadvantages of the standard friction wrist?
Quick Disconnect wrist
Advantage: quick and easy to swap out terminal devices
What wrist is this?
What are the advantages?
Flexion wrist (constant friction wrist with flexion)
Advantages: Allows for wrist flexion, locks in 3 positions, allows for constant friction with TD rotation
Disadvantages: Flexion motion is fixed in one plane
What wrist is this?
What are the advantages/Disadvantages?
Wrist flexion unit (this is a component added to a wrist)
Advantages: Allows for wrist flexion in any plane, locks in 3 different positions
Disadvantages: Added weight and length

Bilateral involvement: on one side
Note: not needed if pronation/supination ROM is preserved
What wrist component is this?
What are the advantages/Disadvantages?
Allow for available forearm pronation and supination
Benefit of flexible hinges
Advantages: Project elbow from torque forces (short residual limb and poor skin integrity), support heavy dutiy axial loading

Disadvantage: Eliminates forearm pronation and supination
Single Axis Hinge advantages/disadvantages?
Single Axis Hinge
What type of Elbow is this?
It has a dual axis which allows for more room in the cubital area when flexed which prevents soft cubital bunching (best for short residual limbs)
What this the purpose of this hinge?
Step-up Hinges
Forearm will flex twice as much as residual limb (requires split socket design)
What type of Elbow is this?
Very short residual limbs
Bilateral involvement

To help achieve greater forearm flexion
Who is the step up hinge indicated for?
Very short residual limb with insufficient strength to support the terminal device. Residual limb locks/unlocks the joints

Requires split socket design.
What are indications for residual limb activated locking hinges?
TH Internal locking Elbow
11 locking positions of elbow flexion.
Can be lock/unlocked with cable or nudge control.
What type of Elbow is this?
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